.ks-checkbox,.ks-checkbox-hover,.ks-checkbox-checked,.ks-checkbox-disabled{
    background:url('http://img03.taobaocdn.com/tps/i3/T1Xj_tXbxeXXaKS.fo-232-65.png') -9px -15px;
    cursor: pointer;
    height: 17px;
    line-height: 18px;
    margin-right: 4px;
    vertical-align: middle;
    width: 17px;
    display: inline-block;
}
.ks-checkbox-disabled{
    background-position:-160px -15px;
}
.ks-checkbox-hover{
    background-position:-179px -15px;
}
.ks-checkbox-checked{
    background-position:-84px -15px;
}